你愿意做我的女朋友吗？

Can I have the chance to be your boyfriend?
(一般都是把女孩子的身价抬高,这样你成功的几率才会高,所以不是你愿意做我女友,而是我能有幸成为你的男友,这样女孩子听到会很高兴,自然成功几率也会提高!)

Would you like to be my girlfriend?

同意写my girl

借用一句歌词：
Will you be my girlfriend?

do you want go out with me?

Are you available to be my girlfriend?